After valve closure, the aortic and pulmonary artery pressures rise slightly (dicrotic wave) followed by a slow decline in pressure. The rate of pressure ...

The isovolumetric contraction causes left ventricular pressure to rise above atrial pressure, which closes the mitral valve and produces the first heart sound.

Isovolumic relaxation time (IVRT) is an interval in the cardiac cycle, from the aortic component of the second heart sound, that is, closure of the aortic valve ...

3.3). During the isovolumic relaxation, the second heart sound appears (fig. 3.4). This sound is caused by vibrations of the semilunar valves, the adjacent ...

With Isovolumic relaxation, early diastolic filling of the left ventricle decreases, and late diastolic filling of the left ventricle increases with ageing.

When the aortic and pulmonary valves close, the heart relaxes isovolumetrically because both the outflow valves and inflow valves are closed, and so no fluid ...

In cardiac physiology, isometric contraction is an event occurring in early systole during which the ventricles contract with no corresponding volume change.

The ventricles generate negative pressure without changing their volume (isovolumetric) so that the ventricular pressure becomes lower than the atrial pressure.

Isovolumetric relaxation is a phase of the cardiac cycle where the ventricles relax, but the atrioventricular (AV) valves remain closed, resulting in no change ...